Polished rod rotor



July 1, 1930'. A. BQYNTQN POLISHED. ROD ROTOR Filed June 19, 1926 a. BUM/70M,

Patented July 1, 1930 ALEXANDER BOYNTON, or SAN An'ronro, TEXAS POLISHED BOD ROTOR Application filed June 19,

This invention relates to an attachment for well pumping equipment and more particularly to a polished rod rotor. I q

The invention forming the subject matter of this application has for a principal aim the provision of. simple means whereby a polished rod, theisucker rodsgof course, and the cups of the workingbarrel may be turned slightly, on the down'strokes of the pump to bring about uniform wear on the stuffing boX, the working barrel, the cups, the polished rod, and the like, and at the same time to exert an intermittent tightening efl'ort on the rods "the joints thereof to avoid parting of the rods.

A further and equally important object is to provide a polished rod rotor which .maybe applied without disconnecting the polished rod from thejbeam, and without altering the design of equipment already in use. p Another aim of the .invention is to provide'a polished rod rotor which may be easily arranged to permit of the pullingpf 'the'rods without entirely detaching the rotor from the polished rod and the beam.

Other objects and advantages will be apparent during the course 'of the following 1 description. v I

In the accompanying drawings forming a pai't'of this. application and in which like numerals are: employed to designate like parts throughout the same,

Figure l is a side elevation of the rotor;-'

i 'Q is a vertical section taken o 111116 22 Of Figure 1; v

;Figure 3 is: a

body of the rotor,

V In the drawing,"wherein for the purpose 40 of illustration is shown a preferred embodiment ofthelinvention the numeral 5 designates'a polished rod of conventional or other design, which, as-shown in "Figure .1; is extended through a polished'rod trunnion 6 and has connection with the beam 7 whereby the rocking off the beam results. in the reciprocation of the polished rod.

The improved rotor includes a substantially U-shaped saddle 8 having a centrally arranged opening '9 for the reception of the of the rods.

group perspective of l 1926. Serial No 117,195. r

polished rod as is apparent. By reference to Figure 3 it will be seen that ,the sides or legs of the u shaped saddle are provided with substantially semi-circular recesses 3 to partially receive the horizontal arms or S PATE T fQFFrcE branches of the polished rod trunnionf lis illustrated in Fig. 1, the trunnion Gis-mOuntmovement on the beam. v It is thus seen that the saddle 8 is 'mounted on the trunnion and is capable of a limited movement thereon. The Walls of the recesses 3 are providedin the vupper portions thereof with shallow elongated notches or sockets 10 to receive burs on the horizontal branches'ofthe trunnion 6; which burs {are ed as indicated at 47 for a limitedrocking present on some trun'nions due to partingof the molders pattern. The provision of the "shallow recesses 10 also enables the curved walls of the recesses 8 to have uniform contact with thetrunnion branches at opposite sides of the vertical center of the same to avoid lostmotion. That is to say, the presenceof the shallow recesses 10 permits of the limited rocking of the saddle onthe trunnion as a result of the convers on of thejrocklng movement ofthe beam intothe reciprocation The saddle 8 constitutes a support for the;

sleeve-like hub ,12 of what might be said to be a ring-gear 14:; the said ring-gear being positioned horizontally and] having constant mesh with a pinion l6. X In carrying out the invention,'the pinion 16 is formed integral with a ratchet gearor. wheel 17 and these two power transmitting.

'members define a combination gear mounted upon a stud 18. "ThestudIS'is' carried by a bracket '20.;Figure3i illustrates that the bracket is provided with an attaching base 2a which may be" formed integral with, the

saddle 8 and which is of annular formation to define a shallowv recess to receive the lowsuitable lubricant. I v

A set screw 27 "is threaded through the s l eeve-like hub 12' and ,is adapted to engage the polished rod to'lock thegear ltotlie er portion of the sleeve-like hub 12 and fa "95 vpolished rod. In this connection, it is notedthat suitable means may be employed to supice I plement the locking action of the set screw 27. i

The gear 17 is engaged by the teeth on a rack arm 30 pivoted as indicated at 31 to an actuator 33 in the nature of a vertical arm. Figure 1 illustrates that the forward portion of the rack 30 is provided with a depending flange 36 which moves between the gear 17 and a lug or extension 38 on the 7 the ends thereof provided with flanges 51 adapted to extend on opposite sides of the beam. One of the flanges is provided with a set screw 54 by means of which a wedge 55 may be forced into pressure contact with an adjacent flange of the beam to hold the clamp or attaching member firmly in place.

\Vhen the improved rotator is to be installed the saddle 8 is first mounted on the trunnion arms and the gear 14 is then slipped onto the polished rod so that the lower portion of the. sleeve 12 will extend into the shallow recess within the member 24. With the gear thus positioned on the polished rod it will be in mesh with the pinion l6 and the rack 30 is now swung into engagement with the driven member 17,

after which the spring 40 is connected to the car 41 and the lateral branch 43 to urge theteeth of the rack into constant engagement with the teeth of the driven member 17. Of, course, the attaching member .50 is secured-on the beam as suggested and to vary the extent of rotation of the rod on each down stroke of the pump the base may be adjusted longitudinally on the beam.

More specifically, if the stroke of the i beam is such that two or three teeth of the rack are engaged on each down stroke of the pump and it is desired to engage say 1 only one tooth, then by moving the rack forwardly toward the rotor assembly until only one tooth of the rack is engaged with a tooth of. the gear 17 on the extreme up stroke it; is apparent that the intermittent rotation will be decreased. In this connection, it is noted that the depending guide flange 36 extends substantially to the rear of the teeth on the rack 30 so that the flange will function even when the rack is adjusted to its foremost position.

.As stated in the opening of this. specification, one of the principal features of the invention resides in the fact that the rods may be pulled without entirely dismantling or disconnecting the improved rotator. Should it be desired to pull the rods, it is merely necessary to detach the spring 40 either from the ear 41 or the lateral branch 43 to permit the rack 30 to be swung on its pivot to an out-of-the-way position. WVith the rack 30 thus disengaged from the combination gear the polished rod may be removed without first disconnecting the sleevelike hub 12. Also the actuator 33 may be allowed to remain in place on the beam.

lVhen the rods are again introduced into the well the rack 30 may be re-engaged with the combination gear as shown and the pumping renewed during which the rack 30 will actuate the combination gear on the down stroke of the rods. As the rods are rotated on the down stroke the friction and weight of the column of fluid on the rods on the up stroke of the rods is avoided. However, there is sufficient friction between the cups or plunger and working barrel to bring about the intermittent tightening of all joints between working barrel and polished rod so that parting of the rods at the jointsis overcome.

The weight of the rods, the cups or plunger and the column of fluid is transmitted through the hub 12 to the saddle 8 so there is considerable friction between the members 12 and 8. During the normal operation of the rotor the hub 12 will intermittently turn only in a clockwise direction on the saddle. During the back stroke of the actuator arm 30 there will be no tendency of the hub to partake of counter-clock wise movement.

However, should the cups or plunger stick in the working barrel a back strain will be built up in the rods and on the back stroke Having thus described'the invention, what is claimed is: 1

1. A polished rod rotor comprising a substantially U-shaped saddle provided with sides having recessesto receive the lateral branches of a polished rod trunnion, the walls of said recesses being adapted to engage said branches at opposite sides of the vertical center of the branches, the upper portions of the walls of said recesses bein provided with notches, a gear having a hub mounted on said saddle, and a rack to turn said gear. j V v .2. A polished rod rotor comprising a gear having a hub provided with means whereby the same may be secured on a polished rod, a combination ,gear having teeth engaged with said first-named gear and being provided with ratchet teeth, a rack engaged with said ratchet teeth, a supporting-meme her for said combination gear having an ex- 7 tension arranged in spaced relation to said combination gear, said rack being provided with means extending between said combination gear and said extension whereby lateral movement of the rack is limited, and spring means urging said rack into engagement with the ratchet teeth of said combination gear.

3-. A polished rod rotor comprisinga gear having a hub provided with means whereby the same may be secured on a polished rod, a combination gear having teeth engaged with said first-named gear and being provided with ratchet teeth, a rack extendingacross the top of and engaged with said ratchet teeth, a supporting member for said combination gear having an extension arranged in spaced relation to said combination gear, said rack being provided with means extending between said combination gear and said extension whereby lateral movement of the rack is limited, spring means urging said rack into engagement with the ratchet teeth-of said combination gear, and an actuator pivotally supporting said rack and having means whereby the same may be connected to a beam. 1

In testimony whereof I aflix my signature. V

ALEXANDER BOYN TON 

